GeoRef, Copyright 2008, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States

Abstract

Ore occurs in veins along cross-cutting normal faults and in contiguous replacement bodies. Three stages of mineralization are recognized--arsenopyrite, quartz; pyrite; and pyrrhotite, chalcopyrite, gold and silver, bismuthinite, bismuth complexes, quartz. If zoning is present, it is masked by differences dependent on wall-rock composition. The high-temperature mineralization is believed to be related to granitic intrusions like those exposed north of the mine.